A dual-station magnetic particle flaw detector

Abstract

This utility model discloses a dual-station magnetic particle flaw detector, including a frame, a first housing with an open top on one side of the frame, and a second housing with an open top on the other side. A first flaw detector is installed in the first housing, and a second flaw detector is installed in the second housing. A magnetic suspension tank is located on one side of the frame, and a first delivery pipe and a second delivery pipe are installed on the frame. Both the first and second delivery pipes are connected to the magnetic suspension tank. The magnetic suspension is delivered to the first flaw detector via the first delivery pipe, and to the second flaw detector via the second delivery pipe. By setting the first and second flaw detectors on both sides of the frame—the first flaw detector for detecting shaft-like workpieces and the second flaw detector for detecting disc-shaped workpieces—the detection range is improved.

Description

Technical Field

[0001] This utility model relates to the field of flaw detector technology, specifically a dual-station magnetic particle flaw detector. Background Technology

[0002] A flaw detector is a non-destructive testing device used to detect internal and surface defects in materials or workpieces. It is widely used in industrial manufacturing, construction engineering, aerospace, rail transportation and other fields to ensure the integrity and safety of materials and structures. However, the current flaw detectors have the following problems: (1) Each flaw detector can only test one type of workpiece. For example, when performing non-destructive testing on the surface and near-surface of shafts and pins such as gears, connecting rods, bolts, pins, impellers and other workpieces, different flaw detectors are required; (2) The coil coverage is small, resulting in a small electromagnetic generation range, which is not conducive to detection. Utility Model Content

[0003] In view of the shortcomings of the prior art, this utility model provides a dual-station magnetic particle flaw detector to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] A dual-station magnetic particle flaw detector includes a frame, a first housing with an open top on one side of the frame, and a second housing with an open top on the other side. A first flaw detector is installed in the first housing, and a second flaw detector is installed in the second housing. The first flaw detector includes a first screw drive mechanism installed in the first housing, with two clamping parts connected to the first screw drive mechanism. The two clamping parts are arranged opposite to each other and can be driven to move simultaneously relative to each other or in opposite directions via the first screw drive mechanism. First coils arranged in an oblique L-shape are connected to both sides of the first screw drive mechanism within the first housing. The second flaw detection unit includes a second lead screw drive mechanism installed in a second housing. A storage seat is driven to the second lead screw drive mechanism, which can drive the storage seat to move linearly. Second coils are arranged in an array on both sides of the second lead screw drive mechanism inside the second housing. A magnetic suspension tank is provided on one side of the frame. A first delivery pipeline and a second delivery pipeline are installed on the frame. Both the first delivery pipeline and the second delivery pipeline are connected to the magnetic suspension tank. The magnetic suspension is delivered to the first flaw detection unit through the first delivery pipeline and to the second flaw detection unit through the second delivery pipeline.

[0006] Preferably, the first lead screw transmission mechanism includes connecting seats fixed at both ends of the first housing, a first lead screw rotatably connected to the two connecting seats via a rotary bearing, a first guide rail fixedly connected to the first housing, and a first motor installed at the outer end of the first housing and transmitted to the first lead screw. The first lead screw has reverse threads on both sides and is connected to a first slide block via the threads on both sides. Both first slide blocks are slidably connected to the first guide rail, and the two clamping parts are respectively installed on the two first slide blocks.

[0007] By using the above technical solution, starting the first motor drives the first lead screw to rotate, which in turn drives the two first slide blocks to move simultaneously or in opposite directions, thereby adjusting the distance between the two clamping parts and thus adapting to workpieces of different lengths.

[0008] Preferably, the clamping part includes a bracket fixedly connected to the first slide, a rotating shaft rotatably connected to the bracket via a rotary bearing, a disc fixed to one end of the rotating shaft, an arc-shaped plate fixed to the upper and lower sides of the disc, a cylinder installed on the outer wall of the arc-shaped plate, and an arc-shaped clamping plate connected to the telescopic end of the cylinder. The discs of the two clamping parts are arranged opposite to each other. The clamping part also includes a polygonal shaft fixed inside the first housing and located below the first lead screw, a second motor installed outside the first housing and drivenly connected to the polygonal shaft, a mounting base fixed to the bottom surface of the first slide, a first sprocket rotatably connected to the mounting base via a rotary bearing, and a second sprocket fixedly connected to the rotating shaft. The inner hole of the first sprocket is a polygonal hole that mates with the polygonal shaft. The first slide has a strip-shaped opening. The first sprocket and the second sprocket are connected by a chain drive, and the chain is movably disposed within the opening.

[0009] The above technical solution involves placing the workpiece between two discs, then controlling the relative movement of the two first slide blocks via a first lead screw transmission mechanism until both ends of the workpiece are positioned between two clamping plates. Then, two cylinders are extended, causing the two clamping plates to move relative to each other and clamp the workpiece. During inspection, a second motor drives a polygonal shaft to rotate. Through the cooperation of the first sprocket, the second sprocket, and the chain, the shaft rotates, thereby rotating the workpiece for comprehensive inspection. Furthermore, the inner hole of the first sprocket is polygonal and mates with the polygonal shaft, allowing the first sprocket to slide on it. When the first slide blocks move the mounting base, the mounting base drives the first sprocket to move synchronously on the polygonal shaft.

[0010] Preferably, the second lead screw transmission mechanism includes a second lead screw rotatably connected to the second housing via a rotary bearing, a second guide rail installed inside the second housing, a third motor installed outside the second housing and connected to the second lead screw for transmission, a second slide block threaded onto the second lead screw, the second slide block being slidably connected to the second guide rail, and a storage seat fixed on the second slide block.

[0011] By controlling the third motor to rotate the second lead screw, the second slide can be moved along the second guide rail.

[0012] Preferably, the first delivery pipeline includes a first pump body installed on the magnetic suspension tank. The inlet end of the first pump body is connected to the magnetic suspension tank, and the outlet end is connected to a first pipe. A first mounting bracket is connected to the outer wall of the first tank. The first pipe is installed on the first mounting bracket. A plurality of L-shaped first nozzles are connected to the first pipe. A solenoid valve is installed on the first nozzle. A first nozzle is connected to the lower end of the first nozzle and is located above the first tank.

[0013] Through the above technical solution, the first pump works to deliver the magnetic suspension in the magnetic suspension tank to the first pipeline, and is then sprayed onto the workpiece by the first nozzle.

[0014] Preferably, the second delivery pipeline includes a second pump body installed on the magnetic suspension tank. The inlet end of the second pump body is connected to the magnetic suspension tank, and the outlet end is connected to a second pipe. A second mounting bracket is connected to the outer wall of the second tank. The second pipe is installed on the second mounting bracket. Two second nozzles are connected to the second pipe. The two second nozzles extend to the upper part of the second coil. Several downwardly inclined second nozzles are installed on the second nozzles.

[0015] Through the above technical solution, the second pump works to send the magnetic suspension in the magnetic suspension tank to the second pipeline, and the second nozzle sprays it onto the workpiece.

[0016] Preferably, lighting devices are installed on one side of the first housing and one side of the second housing.

[0017] The above technical solution, with its lighting device, makes it easier for operators to observe the flaw detection results.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) By setting a first flaw detection section and a second flaw detection section on both sides of the frame, the first flaw detection section is used to detect shaft-type workpieces and the second flaw detection section is used to detect disc-shaped workpieces, thereby improving the detection range.

[0020] (2) The first lead screw drive mechanism drives the workpiece fixed in the clamping part to move within the first coil. The first coil is L-shaped and can generate a multi-directional magnetic field for efficient detection of rod-shaped workpieces. The second lead screw drive mechanism drives the workpiece on the holder into the second coil. The second coil generates a circumferential magnetic field for efficient detection of the top surface of disc-shaped workpieces. After the detection is completed, the workpiece is flipped over to detect the other side of the workpiece. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the first flaw detection section;

[0023] Figure 3 This is a partial schematic diagram of the first flaw detection section;

[0024] Figure 4 This is a schematic diagram of the second flaw detection section;

[0025] Figure 5 This is a partial schematic diagram of the second flaw detection section;

[0026] In the picture:

[0027] 1-Rack, 2-First enclosure, 3-Second enclosure;

[0028] 4-First flaw detection unit, 401-First coil, 402-Connecting seat, 403-First lead screw, 404-First guide rail, 405-First motor, 406-First slide block, 407-Bracket, 408-Rotating shaft, 409-Disc, 410-Arc plate, 411-Cylinder, 412-Clamping plate, 413-Polygonal shaft, 414-Second motor, 415-Mounting seat, 416-First sprocket, 417-Second sprocket, 418-Opening, 419-Chain;

[0029] 5-Second flaw detection unit, 501-Placement seat, 502-Second coil, 503-Second lead screw, 504-Second guide rail, 505-Third motor, 506-Second slide;

[0030] 6-Magnetic suspension tank;

[0031] 7-First delivery pipeline, 701-First pump body, 702-First pipe, 703-First mounting bracket, 704-First nozzle, 705-Solenoid valve, 706-First nozzle;

[0032] 8-Second delivery pipeline, 801-Second pump body, 802-Second pipe, 803-Second mounting bracket, 804-Second nozzle, 805-Second nozzle;

[0033] 9-Lighting device; 10-Shaft-type workpiece. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Example 1

[0036] Please see Figures 1-5 A dual-station magnetic particle flaw detector includes a frame 1, a first housing 2 with a top opening on one side of the frame 1, and a second housing 3 with a top opening on the other side. Both the first and second housings have drain ports at their bottoms. A first flaw detector 4 is installed inside the first housing 2, and a second flaw detector 5 is installed inside the second housing 3.

[0037] The first flaw detection unit 4 includes a first lead screw transmission mechanism installed inside the first housing. Two clamping parts are driven to the first lead screw transmission mechanism, and the two clamping parts are arranged opposite to each other. The first lead screw transmission mechanism can drive the two clamping parts to move simultaneously relative to each other or in opposite directions. The first lead screw transmission mechanism includes connecting seats 402 fixed at both ends inside the first housing, a first lead screw 403 rotatably connected to the two connecting seats via rotary bearings, a first guide rail 404 fixedly connected inside the first housing, and a first motor 405 installed at the outer end of the first housing and driven to the first lead screw. The first lead screw 403 has reverse threads on both sides, and first slide blocks 406 are connected to the threads on both sides. Both first slide blocks 406 are slidably connected to the first guide rail 404, and the two clamping parts are respectively installed on the two first slide blocks 406. Inside the first housing 2, outside the two first guide rails 404, there is a first coil 401 arranged in an oblique L-shape, and the first coil 401 is connected to the inner wall of the first housing 2. The first motor 405 is started, which drives the first lead screw 403 to rotate, thereby causing the two first slide blocks 406 to move relative to each other within the first coil 401, so as to adjust the distance between the two clamping parts and thus adapt to workpieces of different lengths.

[0038] The clamping part includes a bracket 407 fixedly connected to the first slide block, a rotating shaft 408 rotatably connected to the bracket via a rotary bearing, a disc 409 fixed to one end of the rotating shaft, arc-shaped plates 410 fixed to the upper and lower sides of the disc, a cylinder 411 mounted on the outer wall of the arc-shaped plates, and an arc-shaped clamping plate 412 connected to the telescopic end of the cylinder. The discs 409 of the two clamping parts are arranged opposite to each other. The clamping part also includes a polygonal shaft 413 fixed inside the first housing and located below the first lead screw, and mounted outside the first housing. The system includes a second motor 414 connected to a polygonal shaft drive, a mounting base 415 fixed to the bottom surface of the first slide block, a first sprocket 416 rotatably connected to the mounting base via a rotary bearing, and a second sprocket 417 fixedly connected to a rotating shaft. The inner hole of the first sprocket 416 is a polygonal hole that mates with the polygonal shaft 413. The first slide block 406 has a strip-shaped opening 418. The first sprocket 416 and the second sprocket 417 are connected by a chain 419, which is movably disposed within the opening 418. A shaft-like workpiece is placed between two discs 409. Then, the first lead screw drive mechanism controls the relative movement of the two first slide blocks 406 until the end of the workpiece is located between two clamping plates 412. Then, the two cylinders 411 are extended, causing the two clamping plates 412 to move relative to each other and clamp the workpiece. During inspection, the second motor 414 operates, driving the polygonal shaft 413 to rotate. Through the cooperation of the first sprocket 416, the second sprocket 417, and the chain 419, the rotating shaft 408 is driven to rotate, thereby causing the workpiece to rotate for comprehensive inspection. Furthermore, the inner hole of the first sprocket 416 is polygonal and mates with the polygonal shaft 413, allowing the first sprocket 416 to slide on the polygonal shaft 413. When the first slide block 406 drives the mounting base 415 to move, the mounting base 416 can drive the first sprocket 416 to move synchronously on the polygonal shaft 413.

[0039] The second flaw detection unit 5 includes a second lead screw drive mechanism installed inside the second housing. A storage seat 501 is driven onto the second lead screw drive mechanism, which drives the storage seat 501 to move linearly. The second lead screw drive mechanism includes a second lead screw 503 rotatably connected to the second housing via a rotary bearing, a second guide rail 504 installed inside the second housing, and a third motor 505 installed outside the second housing and driven by the second lead screw. A second slide block 506 is threaded onto the second lead screw 503, and the second slide block 506 is slidably connected to the second guide rail 504. The storage seat 501 is fixed to the second slide block 506. Inside the second housing 3, outside the second guide rail, are arranged second coils 502 in an array. Controlling the third motor 505 to rotate the second lead screw 503 causes the second slide block 506 to move along the second guide rail within the second coils 502.

[0040] A magnetic suspension tank 6 is provided on one side of the frame 1. A first delivery pipeline 7 and a second delivery pipeline 8 are installed on the frame 1. Both the first delivery pipeline 7 and the second delivery pipeline 8 are connected to the magnetic suspension tank 6. The magnetic suspension is delivered to the first flaw detection section 4 through the first delivery pipeline 7, and the magnetic suspension is delivered to the second flaw detection section 5 through the second delivery pipeline 8.

[0041] The first delivery pipeline 7 includes a first pump body 701 mounted on the magnetic suspension tank 6. The inlet end of the first pump body 701 is connected to the magnetic suspension tank 6, and the outlet end is connected to a first pipe 702. A first mounting bracket 703 is connected to the outer wall of the first housing 2. The first pipe 702 is mounted on the first mounting bracket 703. Several L-shaped first nozzles 704 are connected to the first pipe 702. A solenoid valve 705 is mounted on the first nozzle 704. A first nozzle 706 is connected to the lower end of the first nozzle 704. The first nozzle 706 is located above the first housing 2. When the first pump body 701 operates, it delivers the magnetic suspension in the magnetic suspension tank 6 to the first pipe 702, and the first nozzle 706 sprays it onto the workpiece fixed by the clamping part.

[0042] The second delivery pipeline 8 includes a second pump body 801 mounted on the magnetic suspension tank. The inlet end of the second pump body 801 is connected to the magnetic suspension tank 6, and the outlet end is connected to a second pipe 802. A second mounting bracket 803 is connected to the outer wall of the second housing 3. The second pipe 802 is mounted on the second mounting bracket 803, and two second nozzles 804 are connected to the second pipe 802. The two second nozzles 804 extend to the upper part inside the second coil 502, and several downwardly inclined second nozzles 805 are mounted on the second nozzles 804. When the second pump body 801 operates, it delivers the magnetic suspension in the magnetic suspension tank 6 to the second pipe 802, and the second nozzles 805 spray it onto the workpiece on the placement seat 501.

[0043] The working principle of this embodiment is as follows:

[0044] When inspecting the shaft workpiece 10, the shaft workpiece 10 is placed between two discs 409. Then, the two first slide blocks 406 are controlled to move relative to each other through the first lead screw transmission mechanism until the end of the workpiece is located between the two clamping plates 412. Then, the two cylinders 411 are extended, driving the two clamping plates 412 to move relative to each other and clamp the workpiece. Then, magnetic suspension liquid is sprayed onto the workpiece through the first nozzle 706. During spraying, the rotating shaft 408 is driven to rotate, driving the shaft workpiece to rotate until the surface of the shaft workpiece is covered with magnetic suspension liquid. Then, the first coil 401 is energized to generate a multi-directional magnetic field, and the inspection of the shaft workpiece begins.

[0045] When inspecting a disc-shaped workpiece, the workpiece is placed on the base 501. The base 501 is driven into the second coil 502 by the second lead screw transmission mechanism. Magnetic suspension liquid is sprayed onto the workpiece through the second nozzle 805. Then, the second coil 502 is energized to inspect the disc-shaped workpiece. After the top surface inspection is completed, the base is removed from the second coil, and the workpiece is flipped over and sent into the second coil for inspection of the other side of the workpiece.

[0046] Example 2

[0047] Based on Embodiment 1, lighting devices 9 are installed on one side of the first housing 2 and one side of the second housing 3. This facilitates the operator's observation of the flaw detection results and prevents the ultraviolet lamp from causing harm to the operator. The lighting devices are installed on the frame; in this embodiment, LED ultraviolet lamps are preferred, overcoming many disadvantages of previous lamps composed of several traditional black mercury lamps. The irradiance is now greatly improved, the performance is stable, the operating cost is low, and maintenance is convenient.

[0048] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A double-station magnetic particle flaw detector, characterized in that: The utility model provides a kind of magnetic suspension liquid detection device, including rack (1), one side of rack (1) is equipped with the first box (2) of top opening, the other side is equipped with the second box (3) of top opening, first box (2) is equipped with first flaw detection part (4) inside, second box (3) is equipped with second flaw detection part (5) inside; The first flaw detection part (4) includes a first screw rod transmission mechanism mounted in the first box, two clamping parts are drivingly connected to the first screw rod transmission mechanism, the two clamping parts are oppositely arranged, and the first screw rod transmission mechanism can drive the two clamping parts to move simultaneously and oppositely, the first box (2) is connected with first coils (401) arranged in an inclined L shape on both sides of the first screw rod transmission mechanism; The second flaw detection part (5) includes a second screw rod transmission mechanism mounted in the second box, a placing seat (501) is drivingly connected to the second screw rod transmission mechanism, and the second screw rod transmission mechanism can drive the placing seat (501) to move linearly, the second box (3) is provided with second coils (502) arranged in an array on both sides of the second screw rod transmission mechanism; The rack (1) is provided with a magnetic suspension tank (6) on one side, and the rack (1) is provided with a first conveying pipeline (7) and a second conveying pipeline (8), the first conveying pipeline (7) and the second conveying pipeline (8) are connected with the magnetic suspension tank (6), the magnetic suspension liquid is sent to the first flaw detection part (4) through the first conveying pipeline (7), and the magnetic suspension liquid is sent to the second flaw detection part (5) through the second conveying pipeline (8).

2. A double-station magnetic particle flaw detector according to claim 1, characterized in that: The first screw rod transmission mechanism includes two connecting seats (402) fixed to the two ends of the first box, a first screw rod (403) rotatably connected to the two connecting seats through a rotating bearing, a first guide rail (404) fixedly connected to the first box, a first motor (405) mounted outside the first box and drivingly connected with the first screw rod, the first screw rod (403) is provided with reverse threads on both sides, and the first screw rod (403) is provided with a first sliding seat (406) connected with the threads on both sides, the two first sliding seats (406) are slidingly connected with the first guide rail (404), and the two clamping parts are respectively mounted on the two first sliding seats (406).

3. A double-station magnetic particle flaw detector according to claim 2, characterized in that: The clamping part includes a bracket (407) fixedly connected to the first slide block, a rotating shaft (408) rotatably connected to the bracket via a rotary bearing, a disc (409) fixed to one end of the rotating shaft, an arc-shaped plate (410) fixed to the upper and lower sides of the disc, a cylinder (411) installed on the outer wall of the arc-shaped plate, and an arc-shaped clamping plate (412) connected to the telescopic end of the cylinder. The discs (409) of the two clamping parts are arranged opposite to each other. The clamping part also includes a polygonal shaft (413) fixed inside the first housing and located below the first lead screw, and a clamping plate (413) installed outside the first housing and connected to the polygonal shaft. The transmission is connected to a second motor (414), a mounting base (415) fixed to the bottom surface of the first slide, a first sprocket (416) rotatably connected to the mounting base via a rotary bearing, and a second sprocket (417) fixedly connected to a rotating shaft. The inner hole of the first sprocket (416) is a polygonal hole that mates with a polygonal shaft (413). The first slide (406) has a strip-shaped opening (418). The first sprocket (416) and the second sprocket (417) are connected by a chain (419), which is movably disposed within the opening (418).

4. A double-station magnetic particle flaw detector according to claim 3, characterized in that: The second lead screw transmission mechanism includes a second lead screw (503) rotatably connected to the second housing via a rotary bearing, a second guide rail (504) installed in the second housing, and a third motor (505) installed outside the second housing and connected to the second lead screw. A second slide (506) is threaded onto the second lead screw (503), and the second slide (506) is slidably connected to the second guide rail (504). The storage seat (501) is fixed on the second slide (506).

5. A double-station magnetic particle flaw detector according to claim 4, characterized in that: The first delivery pipeline (7) includes a first pump body (701) installed on the magnetic suspension tank. The inlet end of the first pump body (701) is connected to the magnetic suspension tank (6), and the outlet end is connected to a first pipe (702). A first mounting bracket (703) is connected to the outer wall of the first housing (2). The first pipe (702) is installed on the first mounting bracket (703). Several L-shaped first nozzles (704) are connected to the first pipe (702). A solenoid valve (705) is installed on the first nozzle (704). A first nozzle (706) is connected to the lower end of the first nozzle (704). The first nozzle (706) is located above the first housing (2).

6. A double-station magnetic particle flaw detector according to claim 5, characterized in that: The second delivery pipeline (8) includes a second pump body (801) installed on the magnetic suspension tank. The inlet end of the second pump body (801) is connected to the magnetic suspension tank (6), and the outlet end is connected to a second pipe (802). The outer wall of the second housing (3) is connected to a second mounting bracket (803). The second pipe (802) is installed on the second mounting bracket (803). Two second nozzles (804) are connected to the second pipe (802). The two second nozzles (804) extend to the upper part inside the second coil (502). Several downwardly inclined second nozzles (805) are installed on the second nozzles (804).

7. A double-station magnetic particle flaw detector according to claim 6, characterized in that: Lighting devices (9) are installed on one side of the first housing (2) and one side of the second housing (3).

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